2 Answers. No Spring Boot isn’t just for REST APIs. Spring Boot is “just” a mechanism for autoconfiguring a Spring Framework based application. Therefore you can use and it does get used for all kinds of stuff.
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Spring is a Web Application framework that serves as an inversion of control(IOC) container for Java. There are extensions to use Spring on top of J2EE and you technically can develop a front-end using Spring, but typically Spring is only used to write your back-end services .
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